I looked it up. VO has been on the ice for 52gf and 51ga. So you are right, he is technically a net positive. At 5v5 that looks like... 26gf and 41ga or a -15 at 5v5. Bryson who this board hates, is the only player worse at 5v5 with a -19 goal differential.
VO is a pp specialist who is a major liability at 5v5 and should be moved on from. Jack Quinn can take his pp spot, or really anyone else we want.